Legally, we're consenting when we agree to the terms of service. If we didn't know they were doing this we might have a legitimate objection that the ToS are a

Legally, we're consenting when we agree to the terms of service. If we didn't know they were doing this we might have a legitimate objection that the ToS are abusive, but that argument is far less compelling if we know they're doing this and agree to the ToS anyway.